Detachable group of leaves for sectional books.



Patented lune n, I90L No. 676,l38.

A. 0. mmznes. DETAOHABLE GROUP OF LEAVES FOR SEOTIONAL BOOKS.

(Application filed Aug. 18, 1899.)

(No Model.)

UNITED STATES I PATENT OFFICE.

AN SON O. KITTREDGE, OF TENAFLY, NEWV JERSEY, ASSIGNOR TO ACCOUNT, AUDIT& ASSURANCE COMPANY, LIMITED, OF NEW YORK, N. Y.

DETACHABLE GROUP OF LEAV E S FOR SECTIONAL BO OKS.

SPECIFICATION formingpart of Letters Patent No. 676,138, dated June 1 1,1901.

Application filed August 18, 1899. Serial No. 727.714. (No model.)

To all whom it may concern.-

Be it known that I, ANSON O. KITTREDGE, a citizen of the United States,residing at Tenafly, county of Bergen, State of New J ersey, haveinvented certain new and useful Improvements in Detachable Groups ofLeaves for Sectional Books, fully described and represented in thefollowing specification and the accompanying drawings, forming a part ofthe same.

The object of the present invention is to furnish an improvedconstruction for payrolls, progressive ledgers, balance-sheet ledgers,and analogous records in which a series of leaves is used successivelyin conjunction with a list of permanent data. In the case of a pay-rollsuch permanent data consists of a list of names and wages, and differentleaves are applied in succession to such list to record the time of theworkmen and amounts due to them upon successive dates. The presentinvention furnishes a means of preparing such a conjoint record andremoving not only the leaves which are successively used, but also theslip bearing the permanent data to form with the leaves a permanentrecord. T

My construction comprises a foundationsheet, a group of foldedleavessecure'd detachably thereto, a thickening-pad secured upon themargin of such sheet adjacent to the free edges of the leaves, and adetachable slip upon the surface of the thickener. The list of names orpermanent data is inscribed upon such detachable slip, and thedetachable slip and the group of leaves may with this construction bothbe renewed at pleasure or removed for preservation. The thickening-pador thickener is made of the same thickness as the group of foldedleaves, and the removable facing-slip affords the means of renewing theWriting-surface to alter the date whenever required and to permit thedetachment of the facing-slip when it is desired to preserve the sametoform a conjoint record with the group of filled leaves.

A considerable number of such foundationsheets with attached pads andleaf-groups may be adapted for securing in a suitable binder to formatlarger book by extending a flexible shank from the edge of the sheetnext the leaf-hinges and thickening such shank in agreement with theleaves and pad. The thickened shanks may then be clamped to gether byany suitable means and form a volume of uniform thickness throughout.

In the annexed drawings, Figure 1 is an end view of a singlebook-section. Fig. 2 is a perspective view of the foundation-sheet, withpad I; and thickener t. Fig. 3 is a perspective view of the under sideof the detachable facing-slip; Fig. at, a perspective View of the groupof hinge-leaves and their back plate, and Fig. 5 shows in perspectivefive sections secured in the binder.

a designates the foundation-sheet, which may be made of stiff paper,millboard, thin metal, or other suitable material. The left margin ofsuch sheet is shown provided with a thickening-pad 17, secured upon thefoundation-sheet by cement or other suitable means. The pad is providedwith four di agonal slits c to engage the corners of a back plate f,attached to a facing-slip 1). (Shown in Fig. 3.) The unthickened portionof the sheet is shown in Fig. 2 provided with four diagonal slits c toengage the corners of the back piece f, attached to the group of leaves(1. leaves united by stitches e to form a hinge, and the back piece f isattached to the rear leaf ofthe group, and the corners of such backpiece are adapted to fit'in the slits c to hold the group detachablyupon the sheet. The slits are so arranged that the back piece The groupis shown with the folds of the i holds the free edges of the leaves inproximity to the slip b. Fig. 1 shows the back piece f lying between thegroup of leaves and the foundation-sheet a, with the corners of suchback piece projected through the sheet, as when fitted into the slits c.This figure also shows the back platef between the pad I) and the slipb".

Fig. 1 shows a shank 7t formed by extending the right-hand end of thesheeto adjacent to the hinge of the leaves. The shank is provided with athickenert' of the same height as the pad Z7 and group of leaves at, andsuch shank adapts the structure to form a book unit or section forbinding in a volume with similar sections. The shank-thickener t is madeof pasteboard, wood, or other used for book-sections it is desirable tothicken rates it a little way from the hinge of the leaves, and theshank is thus united to the sheet by a flexible joint, which permits thesections to turn in the volume when the shanks are clamped together.Fig. shows agroup of five such units or sections connected together bythe so-called R. & B. loose-leaf-' ledger clamp and provided with ablank sheet J upon the rear side to cover the leaves and pad upon thelast section. The sections may also be held together by any postbinder.Such construction permits sections to be added successively andpreserved together for future reference, and any binder adapted to clampthe shanks is obviously suitable for such purpose. The group of leavesmay be hinged to the foundation-sheet by any suitable fasteners.

Transverse lines are shown ruled upon the surface of the pad and leavesin Fig. 3, and such lines are necessary in such constructions toindicate the corresponding spaces to be used in conjunction upon the padand upon the leaves. To hold such lines in coincidence, itis desirablethat the group of leaves should be held securely upon thefoundatio'n-shect while in use.

Fig. 3 shows a ledger in which each section is adapted to contain acertain number of accounts for one year,'. and the book is open at theend of one section.

It is obvious that the group of leaves could be used in conjunction witha single slip upon the unthickened -margin of the foundation.- sheet ifsuch slip and leaves were ruled in correspondence; but Where thestructure is the edge of the leaf to make the book of even thicknessthroughout. For such use the foiln'd'ationsheetis therefore thickenedupon two opposite margins, and the group of leaves has its hinge securedto the sheet between the thickened margins. and adjacent to the I bendbetween the leaf-hinges and the thick-- ened shank, and thefoundation-sheet thus has a flexible joint on the shank, while theleaves in the group are hinged together and turn independently of suchjoint.

My invention greatly facilitates the preparing of a joint record and thepreservation of the same in a convenient form, as the group of foldedleaves is readily detached from the foundation-sheet when they have beenfilled with inscriptions, and the facing-slips b similarly detached fromthe pad b. Both can then for such narrow leaves, such section comprisingthe foundation-sheet a with shank h at one edge, a group of foldedleaves 61 secured to the sheetwith the fold adjacent to the shank h, andthickeners i and I) attached to both margins of the sheet to compensatefor the group of narrow leaves, substantially as herein set forth.

2. In a book having groups of detachable narrow leaves and wide leavesthickened at the margin to compensate for such narrow leaves, thecombination of a series of sections comprising each a foundation-sheetat having the shank h with thickener t', a clamp for securing thethickened shanks together, a group of folded leaves 01 secured to thesheet with the fold adjacent to the shank h, and the thickener 1) uponthe margin of the sheet a. to compensatefor the group of leaves (1, suchthickener having a detachable slip upon its surface, as and for thepurpose set forth.

In a book having groups of detachable narrow leaves and wide leavesthickened at the margin to compensate for such narrow leaves, thecombination of a series of sections comprising each a foundation-sheet ahaving the shank h with thethickener i thereon, a clamp for securing thethickened shanks together, a group of folded leaves (1 secured to thesheet with a space forming a flexible shank between their fold and thethickener 1), and the sheet having the thickener 19 upon the margin ofthe sheet to compensate for the group of leaves 01-, with a detachableslip upon such thickener, whereby the sections may be clamped togetherby their shanks and turned freely thereon, and the folded leaves anddetachable slips be renewed or removed at pleasure.

In testimony whereof I have hereunto set

